Regular cow?s milk is not a sufficient source of nutrition for a kitten. Hartz Powdered Kitten Milk Replacer is precisely formulated to emulate mother?s milk with the optimal balance of vitamins, minerals, and essential nutrients to support growth and development during the formative first 6 weeks of life. Suitable as a supplement for pregnant, nursing, or convalescing cats and ready for on-demand feeding - just mix with room temperature water. Use with our newborn pet bottle ? specifically sized for small mouths (sold separately).